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(No Model.)

` CIRCULAR SAWING MACHINE.

No. 358,173. Patented Feb. 22, 188'7.

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, 2 Sheets- Sheet l. C. Jf STURGEON.

(No Model.)

` 2' sheetssheet 2. C.4 STURGEON.

V CIRCULAR SAWING MACHINE. No. 358,173.

IPaterlted Feb.l 22, 1,887

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',IINITED STATES PATENT OFFICE.

CARSON J. S'IURGEON, OF MILES GROVE, PENNSYLVANIA, ASSIGNOR TO THEKEYSTONE MANUFACTURING COMPANY, OF SAME PLACE.

CIRCULAR SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 358,173, dated February22, 1887.

Application tiled April 24, 1886.

To all whom, it may concern.-

Be it known that I, CARSON J STURGEON, a citizen of the United States,residing at Miles Grove, in the county of Erie and State ofPennsylvania, have invented certain new and useful Improvements inSawing-Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, forming part of this specification.

My invention relates to sawing-machines; and it consists in theimprovements hereinafter set forth and explained.

My invention is illustrated in the accompanying drawings, in which-Figurel is a perspective view of my imY proved sawing-machine with thelegs of the machine broken away, (and the treadle for moving the sawsapart not shown.) Fig.2 is a vertical `crosssection of saine onv theline w w in Fig. l, looking in the direction of the arrow x. Fig. 3 is avertical cross-section of same on line y y in Fig. l, looking in thedirection of the arrow y.

Like letters refer to like paris in all the gures. Y

In the construction of my improved sawingmachine, A is the table orframe upon which the mechanism of the machine is supported, andB thecounter-shaft of the machine, preferably secured upon one end of thetable A.

Upon one end of the table A, opposite the counter-shaft B, is secured avertical frame, C, and upon this frame C are mounted four circular saws,D D D D, which are arranged to cut toward a common center, as shown inFig. 3, and driven by belts b b b b from pulleys B on the counter-shaftB.

The mandrels F of these saws D are mounted upon sliding carriages G,which move in gibs H on the -front of the frame C, as shown in Figs. 1and 2. On the back of the frame C is mounteda circle, I, secured to theback of the frame by circular guides J, in which it turns. Secured tothis circle I are stud-pins z' t' t t', which pass through openings Kinthe frame C into slots k (see Fig. 3) in the backs of the Slidingsaw-'carriages G. On one side of the sel-inno. 200,018. (N0 model.)

circle is secured a lever, L, from the outer end of which aconnecting-rod, Z, extends downward to a treadle, (not shown,) andanother connecting-rod, Z, extends upward to a spring (not shown)attached to the ceiling of the room in which it is operated, so thatwhen the foot of the voperator is applied` to the treadle the lever L ismoved downward, turning the circle I. The stud-pins t', thereby actingupon the saw carriages G, move them (together with the saws D mountedthereon) backward upon the gibs I H, thereby throwing the saws D apart,as shown in Fig. 2. When, however, the foot of the operator is removedfrom the treadle, the spring attached to the rod Z above the lever VLoperates to automatically move the lever L and thesaw-carriages G backto their normal positions, as shown in Fig. 3, so that the saws may belet into or moved out of a stick being sawed in the machine at any pointdesired without cutting the saw-kerfs out at the end of the stick. Themovement of the circle I may be adjusted as desired, so that the saws D4will cut any depth desired, by means of an adjustable stop, Z2, on therod Z, where it passes through a guide, t3, on the side of the table A.(See Fig. l.) In this manner the saws D will operate in and out of work,cutting to any depth at the will of the operator.

To the table, in front of the upright frame C, is secured a projectingframe, N, provided with ways n n, in which a sliding carriage, O,operates. Upon the top of this carriage is a hinged clamp, P, adapted tohold round or square sticks to be sawed. The height of the clamp P ismade adjustable by means of a sliding joint, O', in the standard of theclamp P. There is also secured to the frame-N, as closely as possible tothe saws D, by means of a standard,Q,) a self-centering chuck or guide,

, R, which, operated by means of the ordinary eccentric mechanism usedin chucks of this class, centers the rods to be sawed. This chuck orguide is operated by the lever B', and is thereby opened or closed, soas -to fit and center various-sized sticks, so that any sized stick canbe at once centered by moving the lever R', so that in operation, whenthe stick is clamped into P and pushed up to the chuck or guide R, theoperator moves the le- 3 ver R', so as to open the chuck or guideR suf-ICO ciently to receive the stick, which the operator pushes through itbetween the saws; and after the sawing is done the stick is with drawn.

In Fig. 3 the saws are shown as quartering a round stick, the saws beingset by means ot' adjusting-screws f, so that the sawkerts will all bewithin two opposite quarters, and the two remaining quarters will befull quarters, so that when the smaller quarters are removed the fullquarters ofthe stick will, together with the like parts ot another sticksawed in the same manner, make a .ioi nt the i'ull size ofthe stick, sothat two sticks sawed and joined in this manner will make acontinuousstick ol' like size in every part.

For many purposes it may be desirable lo only use two or three of thesaws at one time. [n this case one or more of the saws are removed andthe remaining saws operated on the stick, as before.

I have thus shown and described convenient mechanism for utilizing myinvention. However, many parts ot' my machine may be modiied inconstruction and equally good results obtained. rtherefore I donotdesire to limit myself to the exact construction shown and described;but

What I claim as new, and desire to secure by Letters Patent ofthe UnitedStates, is-u 1. The combination, in a sawing-machine, of four circularsaws cutting toward a common center, mounted upon sliding saw-carriagesadapted to move the saws toward and from a common center, and means foradjusting the saws and their lnandrels endwise with a stationary guide,and a sliding carriagen front of the saws adapted to convey the workthrough the stationary guide to and from the saws, substantially as andfor the purpose set forth.

2. The combination, in a sawingnnaehine,

of tour circular saws mounted in a frame so as to cut toward a commoncenter, with an adjustable centering-guide in front 0f the saws,

and a sliding carriage provided with clamping mechanism tor holding andmoving the work up to and between the saws, substantially as set forth.

3. The combination, in a sawing-machine, of tour sliding saw-carriagesmounted upon a frame and adapted to move circular saws mounted thereontoward and from a common center, with a ring on said frame provided withstud-pins engaging with said carriages, and a lever for operating saidring, whereby said carriages may be siniultaneously moved toward or froma common center, substantially as and l'or the purpose set forth.

1. The combination, in a sawing-machine, ol' four sliding saw-carriagesoperating on gibs upon an upright frame carrying circular saws which cuttoward a common center, with mechanism l'or simultaneously moving saidcarriages and the saws mounted thereon toward and troni such commoncenter, and an adjustable stop, Z2, on the rod Z, for regulating thedownward movement ot` the lever L, and thereby regulating the distanceof the saws, substantially as and for the purpose set forth.

5. The combination, in a sawing-machine` of the saws D l) l) D with thecenteringguide It and the sliding carriage O, provided with the clampI), substantially and for the purpose set l'orth.

In testimony whereofI attix my signature in presence of two witnesses.

IARSON J. STURGEON. \Vitnesses:

W. D. JANns, E. S. liiok.

